If u have a separate game that has Latios/Latias on it, trade it to your current game before u beat the E4(u can trade it after, but I trade it before becuz I want to shiny hunt for it, and I don't want the game to save at the wrong moment) and u should be able to track it as soon as u watch the TV program. I haven't actually tried this, but I think this works.

And I answered my own question, I will reset for a new ID every week, and I will soft reset for at least 4 hours a day.

Edit: I am doing 25 more soft resets for charmander, and then I will play some other game. I have already soft reset for 4 hours, but I just want to do a couple more just to be safe.